High-tensile-strength lightweight deep sea trailing cable

Abstract

The invention relates to the technical field of trailing cables, and discloses a high-tensile-strength lightweight deep sea trailing cable, which is characterized in that the outer side of a copper conductor is coated with an insulating layer, the periphery of an inner support piece is coated with a heat dissipation layer capable of uniformly transferring heat, the outer side of the heat dissipation layer is provided with a waterproof layer capable of blocking and preventing water, the waterproof layer is embedded in the inner side of a tensile inner layer, and the tensile inner layer is provided with a waterproof layer. According to the invention, the heat transfer and heat dissipation capability in the cable is effectively improved, the passive water blocking and active water stopping capability in the cable is enhanced, the tensile inner layer endows the cable with excellent tensile strength, and the pressing layer greatly improves the pressure resistance and compression resistance of the cable, so that the cable has the capability of stable operation in severe environments of high pressure and low temperature in deep sea, and the service life of the cable is prolonged. In addition, a light-weight fiber material is used for replacing a traditional metal material, the high tensile property is guaranteed, meanwhile, light weight of the cable is achieved, the dragging resistance is reduced, and the comprehensive use requirement for high tensile strength and light weight is met.

Description

Technical Field

[0001] This invention relates to the field of towing cable technology, specifically to a high-tensile-strength, lightweight deep-sea towing cable. Background Technology

[0002] With the continuous development of water area development, various underwater robots and underwater operation equipment are widely used. Seawater-resistant special cables (deep-sea towing cables), as supporting cables for underwater equipment, can safeguard the safe and efficient operation of underwater equipment. Deep-sea towing cables are special cable systems that connect deep-sea exploration / operation mother ships and underwater towing bodies. Underwater towing bodies include seismic exploration equipment, acoustic sonar, and remotely operated vehicles (ROVs). Deep-sea towing cables also need to meet the requirements of power transmission, signal communication, and towing load-bearing capacity of underwater equipment. They are the key link connecting surface platforms and underwater equipment. The deep-sea environment (high water pressure, strong corrosion, low temperature) places extremely high demands on cable performance, requiring simultaneous satisfaction of three major requirements: stable communication, reliable power supply, and safe load-bearing capacity. In actual towing applications, current deep-sea towing cables are prone to deformation and damage when facing complex marine environments with high pressure, towing force, and low temperature. This is because they lack effective tensile strength measures, which affects normal underwater operations. Furthermore, the current towing cables are relatively heavy, which places high demands on the towing power of the mother ship, and their deployment and retrieval efficiency cannot be guaranteed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a high-tensile-strength, lightweight deep-sea towing cable. This solves the problems of current deep-sea towing cables, which, in actual towing applications, are prone to deformation and damage when facing complex marine environments with high pressure, towing force, and low temperature due to the lack of effective tensile strength, thus affecting normal underwater operations. Furthermore, the current towing cables are relatively heavy, requiring high towing power from the mother ship, and their deployment and retrieval efficiency cannot be guaranteed.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high tensile strength lightweight deep-sea towing cable, comprising copper conductors and optical fiber cables, wherein there are four groups of copper conductors, and each copper conductor is centrally symmetrically distributed, and the optical fiber cable is placed at the center of the copper conductors. The outer side of each copper conductor is covered with an insulating layer, and each copper conductor is separated and supported by an inner support member. The outer side of the inner support member is covered with a heat dissipation layer for uniform heat transfer, and a water-blocking layer for waterproofing is provided on the outer side of the heat dissipation layer. The water-blocking layer is nested inside the tensile inner layer, and a pressure-bearing and buffering protective pressure-resistant layer is provided on the outer side of the pressure-resistant layer. A physical protective shielding layer is provided on the outer side of the shielding layer, and an outer sheath is provided on the outer side of the shielding layer. The water-blocking layer and the tensile inner layer are separated by a supporting inner layer, and the supporting inner layer has uniformly distributed pores inside. The tensile inner layer is composed of interwoven fiber bands and spiral fiber bundles. The outer side of the optical fiber cable is covered with an inner cladding layer, and the outer side of the inner cladding layer is covered with fiber-reinforced resin in a spiral pattern. The outer side of the fiber-reinforced resin is covered by a metal armor layer. The gap between the outer side of the insulation layer and the inner support is filled with thermally conductive silicone grease, and multiple sets of polyethylene fiber bundles are inserted longitudinally inside the thermally conductive silicone grease. The inner support is provided with an inner support block on the side.

[0005] As a preferred technical solution for a high tensile strength and lightweight deep-sea towing cable of the present invention, the fiber interlacing tape is formed by two sets of aramid fiber tapes with opposite directions of rotation interlacing in a spiral shape. Two sets of spiral fiber bundles are provided, and the two sets of spiral fiber bundles tightly wrap around the outside of the fiber interlacing tape in a spiral winding manner.

[0006] As a preferred technical solution for a high tensile strength and lightweight deep-sea towing cable according to the present invention, the cross section of the inner support member is cross-shaped, and the inner support blocks are located on the cross shape. The cross section of the thermal grease is fan-shaped, and the thermal grease is in close contact with the four inner support blocks of the inner support member.

[0007] As a preferred technical solution for a high tensile strength and lightweight deep-sea towing cable of the present invention, the inner support block has several guide grooves equidistantly through it. The contact position between the inner sidewall of the heat dissipation layer and the inner support member is uniformly provided with several sets of thermally conductive silicone sheets along the circumferential direction. The heat dissipation layer has several longitudinally arranged uniformly heated cavities arranged along its axial direction. The uniformly heated cavities are filled with thermally conductive oil, and resin particles are uniformly distributed in the thermally conductive oil. Adjacent uniformly heated cavities are separated by spacers. The inner side of the uniformly heated cavities is provided with several sets of reinforcing ribs along its longitudinal direction.

[0008] As a preferred technical solution for a high tensile strength and lightweight deep-sea towing cable of the present invention, the guide groove transfers the heat absorbed by the thermal grease outward along the cable axis, the thermally conductive silicone sheet and the thermally conductive oil in the uniform heat cavity transfer the heat horizontally along the cable, and the thermally conductive silicone sheet separates the inner support and the heat dissipation layer.

[0009] As a preferred technical solution for a high tensile strength and lightweight deep-sea towing cable of the present invention, the outer side of the water-blocking layer is provided with several uniformly distributed integrated side grooves, the interior of the water-blocking layer is provided with a water-absorbing filling cavity, and a water-soluble filling bag is embedded and connected at the middle position between two integrated side grooves on the inner side of the water-blocking layer. Water-blocking grease is embedded and tightly connected to the inner side of the integrated side grooves. A connecting groove communicating with the water-absorbing filling cavity is opened on the edge of the water-blocking layer, and aerogel is embedded and tightly connected to the inner side of the shielding layer.

[0010] As a preferred technical solution for a high tensile strength and lightweight deep-sea towing cable of the present invention, the water-blocking grease is tightly connected to the inner wall of the integrated side groove, the inner side of the water-absorbing filling cavity is filled with water-absorbing agent and nitrogen, and the interior of the water-soluble filling bag is provided with hydrogen peroxide solution.

[0011] As a preferred technical solution for a high tensile strength and lightweight deep-sea towing cable of the present invention, the pressure-bearing layer has multiple elastic pressure-bearing cavities distributed at equal angles inside, and elliptical transition holes are provided on both sides of the elastic pressure-bearing cavities inside the pressure-bearing layer. Spreading grooves are provided between the elliptical transition holes and the elastic pressure-bearing cavities. The outermost layer of the pressure-resistant layer is provided with a pressure-bearing outer layer, and the inner side of the pressure-bearing outer layer is provided with a distribution strip corresponding to the position of the elastic pressure-bearing cavity. The side of the elliptical transition hole is provided with an overflow narrow groove that communicates with the inner side of the pressure-bearing outer layer.

[0012] As a preferred technical solution for a high tensile strength and lightweight deep-sea towing cable according to the present invention, the inner side of the elastic pressure-bearing cavity is filled with a non-Newtonian fluid, and the capacity of the elastic pressure-bearing cavity is greater than the capacity of the elliptical transition hole.

[0013] As a preferred technical solution of the present invention for a high tensile strength and lightweight deep-sea towing cable, the inner side of the pressure-resistant layer is provided with a receiving groove corresponding to the distribution strip, the distribution strip is tightly embedded in the receiving groove, and a gap is provided between the outer pressure-resistant layer and the inner side of the pressure-resistant layer, and the gap is connected to the elastic pressure-resistant cavity through an overflow narrow groove.

[0014] Compared with the prior art, the present invention provides a high tensile strength and lightweight deep-sea towing cable, which has the following beneficial effects: 1. The inner support components and thermally conductive silicone grease provide stable support for the copper conductor, ensuring the mechanical strength of the inner structure of the cable. Combined with a tensile inner layer composed of interwoven fiber tape and spiral fiber bundles, high-performance fiber materials replace traditional metal materials, achieving tensile reinforcement on the outside of the cable conductor. This reduces overall weight and significantly improves tensile performance, ensuring the cable's reliability under dragging conditions. Furthermore, the inner sheath, fiber-reinforced resin, and metal armor layer located at the cable's center effectively enhance the tensile strength of the innermost center of the cable. The polyethylene fiber bundles embedded in the thermally conductive silicone grease further enhance the axial tensile and elongation resistance of the inner support components and blocks while providing axial support stiffness, effectively strengthening the middle structure of the cable conductor. Through the three-dimensional arrangement and synergistic stress distribution of the multi-layered tensile structure in the outer, middle, and inner layers, the overall tensile performance of the cable is comprehensively improved, achieving optimal structural efficiency.

[0015] 2. The use of thermally conductive silicone grease, internal support blocks, and guide grooves facilitates the construction of an efficient heat transfer path, enabling the rapid axial dissipation and diffusion of heat generated by the conductor during cable operation. Combined with a heat dissipation layer consisting of thermally conductive silicone sheets, uniform heat distribution cavities, spacers, and reinforcing ribs, the thermally conductive oil within the uniform heat distribution cavity absorbs and transfers heat during outward conduction. This not only effectively reduces the temperature in the cable's central area but also achieves a shift from axial conduction to uniform lateral distribution of heat. This facilitates rapid and even heat distribution within the cable, preventing localized overheating from affecting operation. Furthermore, the resin particles filling the uniform heat distribution cavity allow for creep when the cable is under tension or compression. This passive movement promotes the flow of thermally conductive oil, further enhancing the uniformity of heat distribution. By distributing the heat from the cable's center outwards, heat dissipation efficiency is improved, while residual heat is utilized to maintain the cable's flexibility in low-temperature deep-sea environments, preventing material embrittlement and ensuring long-term stable operation of the cable under complex working conditions.

[0016] 3. A reliable internal water-blocking barrier is formed by the water-blocking grease filled in the integrated side groove within the cable's internal water-blocking layer. This, combined with the aerogel on the cable's exterior, further enhances passive waterproofing. The absorbent filling cavity contains absorbent material, which expands upon contact with water and is extruded through connecting grooves, effectively filling the gap between the water-blocking layer and the supporting inner layer. It further penetrates through the scattered pores in the supporting inner layer, improving the sealing tightness and achieving active water-blocking repair in the event of leakage. Simultaneously, the hydrogen peroxide solution released by the water-soluble filling bag upon contact with seawater reacts to generate oxygen, which, together with nitrogen in the absorbent filling cavity, creates pressure, rapidly extruding the absorbent material for a quick and active response. In the initial stage of the leakage response, the generated oxygen and nitrogen overflow along the leakage path, forming dense bubbles that visually indicate the location of the leak, facilitating timely maintenance.

[0017] 4. The elastic pressure-bearing cavity within the pressure-bearing layer is filled with non-Newtonian fluid. When the pressure-bearing layer is subjected to external pressure, the distribution strip initially disperses the pressure and concentrates and precisely transfers it to the non-Newtonian fluid. Utilizing the viscosity change characteristic of the non-Newtonian fluid under stress, the stress is rapidly transferred to the elliptical transition holes on both sides of the elastic pressure-bearing cavity under the guidance of the spreading grooves. This achieves energy buffering and multi-directional dispersion, enhances the cable's compressive strength, and avoids localized stress damage to the cable. The overflow narrow groove can further transfer the non-Newtonian fluid transferred in the elliptical transition holes outward, filling the gap between the outer pressure-bearing layer and the inner pressure-bearing layer, forming a protective coating. This allows the cable to directly absorb and disperse external forces through the dynamic transfer of the non-Newtonian fluid when under pressure, effectively preventing structural damage.

[0018] In summary, by incorporating a heat dissipation layer, a water-blocking layer, a tensile inner layer, and a pressure-resistant layer within the cable, the cable's internal heat transfer and heat dissipation capabilities are improved. This enhances the cable's passive and active water-blocking capabilities. Furthermore, the tensile inner layer imparts excellent tensile strength, while the pressure-resistant layer significantly improves its pressure resistance, enabling the cable to operate stably in the harsh environments of deep-sea high pressure and low temperature, and withstand higher-intensity towing loads. In addition, replacing traditional metal materials with lightweight fiber materials achieves cable weight reduction while maintaining high tensile performance, reducing drag resistance and meeting the combined requirements of high tensile strength and lightweight design. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0021] Figure 3 This is a schematic cross-sectional view of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the pressure-resistant layer of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the fiber interlaced tape of the present invention.

[0024] Figure 6 This is a schematic diagram showing the distribution of the adhesive strips of the present invention.

[0025] Figure 7 This is a schematic diagram of the shielding layer of the present invention.

[0026] Figure 8 This is a schematic diagram of the structure of the thermally conductive silicone sheet of the present invention.

[0027] Figure 9 This is a schematic diagram of the water-blocking layer of the present invention.

[0028] Figure 10 This is a schematic diagram of the heat dissipation layer of the present invention.

[0029] Figure 11 This is a schematic diagram of the structure of the thermal grease of the present invention.

[0030] In the diagram: 1. Copper conductor; 2. Fiber optic cable; 3. Insulation layer; 4. Inner support component; 5. Heat dissipation layer; 6. Water-blocking layer; 7. Tensile inner layer; 8. Compression-resistant layer; 9. Shielding layer; 10. Outer sheath; 11. Supporting inner layer; 12. Distributed pores; 13. Fiber interlacing tape; 14. Spiral fiber bundle; 15. Inner cladding; 16. Fiber-reinforced resin; 17. Metal armor layer; 18. Thermal grease; 19. Polyethylene fiber bundle 20. Inner support block; 21. Guide groove; 22. Thermally conductive silicone sheet; 23. Uniform heat-generating cavity; 24. Spacer ring; 25. Reinforcing rib; 26. Integrated side groove; 27. Water-absorbing filling cavity; 28. Water-soluble filling bag; 29. ​​Water-blocking grease; 30. Connecting fine groove; 31. Aerogel; 32. Elastic pressure-bearing cavity; 33. Elliptical transition hole; 34. Spreading fine groove; 35. Pressure-bearing outer layer; 36. Distribution strip; 37. Overflow narrow groove. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0032] In the description of this invention, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0033] In the description of this invention, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example: Please refer to Figure 1-11 The present invention provides the following technical solution: a high tensile strength lightweight deep-sea towing cable, comprising copper conductors 1 and optical fiber cables 2, four groups of copper conductors 1, each copper conductor 1 being centrally symmetrically distributed, the optical fiber cable 2 being placed at the center of the copper conductors 1, the outer side of the copper conductors 1 being covered with an insulation layer 3, the insulation layer 3 being made of highly flexible polyurethane, each copper conductor 1 being separated and supported by an inner support member 4, the outer side of the inner support member 4 being covered with a heat dissipation layer 5 for uniform heat transfer, the outer side of the heat dissipation layer 5 being provided with a water-blocking and waterproof layer 6, the water-blocking layer 6 being nested inside the tensile inner layer 7, the outer side of the tensile inner layer 7 being provided with a pressure-bearing and buffering protective layer 8, the outer side of the pressure-blocking layer 8 being covered with a physical protective shielding layer 9, the shielding layer 9 being made of high-performance polymer material, the outer periphery of the shielding layer 9 being provided with an outer sheath 10, the outer sheath 10 being made of polyurethane material; The water-blocking layer 6 and the tensile inner layer 7 are separated by the supporting inner layer 11, and the supporting inner layer 11 has uniformly distributed pores 12. The tensile inner layer 7 is composed of a fiber interlacing tape 13 and a spiral fiber bundle 14. The fiber interlacing tape 13 is made of two sets of aramid fiber tapes with opposite directions of rotation interlaced in a spiral shape. There are two sets of spiral fiber bundles 14. The two sets of spiral fiber bundles 14 are tightly wrapped around the outside of the fiber interlacing tape 13 in a spiral winding manner. By replacing the traditional rigid metal material with fiber material, tensile reinforcement is achieved on the outer layer of the cable conductor. While reducing the overall weight of the cable, it has higher tensile strength. The outer side of the fiber optic cable 2 is covered with an inner cladding layer 15, which is made of ultra-high molecular weight polyethylene fiber. Fiber-reinforced resin 16 is spirally distributed on the outer side of the inner cladding layer 15. The fiber-reinforced resin 16 is covered by a metal armor layer 17. The gap between the outer side of the insulation layer 3 and the inner support member 4 is filled with thermally conductive silicone grease 18. Multiple sets of polyethylene fiber bundles 19 are inserted longitudinally inside the thermally conductive silicone grease 18. Inner support blocks 20 are provided on the side of the inner support member 4. The cross-section of the inner support member 4 is cross-shaped, and the inner support blocks 20 are located on the cross-shaped cross. The cross-section of the thermally conductive silicone grease 18 is fan-shaped, and the thermally conductive silicone grease 18 is in close contact with the four inner support blocks 20 of the inner support member 4. Through the inner support member 4 and the inner support blocks 20, the axial tensile strength is greatly improved while providing axial support strength. The inner support member 4 and the inner support blocks 20 are made of Kevlar fiber.

[0036] The inner support block 20 has several guide grooves 21 equidistantly through its interior. Several sets of thermally conductive silicone pads 22 are evenly arranged circumferentially at the contact points between the inner wall of the heat dissipation layer 5 and the inner support member 4. Several longitudinally arranged uniformly heated cavities 23 are arranged inside the heat dissipation layer 5 along its axial direction. Each uniformly heated cavity 23 is filled with thermally conductive oil, and resin particles are evenly distributed within the oil. Adjacent uniformly heated cavities 23 are separated by spacers 24. Several sets of reinforcing ribs 25 are arranged longitudinally along the inner side of each uniformly heated cavity 23. The guide groove 21 transfers the heat absorbed by the thermal grease 18 outward along the cable axis. The thermal conductive silicone sheet 22 and the thermal oil in the uniform heat cavity 23 transfer the heat horizontally along the cable. The thermal conductive silicone sheet 22 separates the inner support 4 and the heat dissipation layer 5. The reinforcing rib 25 ensures the flexibility of the heat dissipation layer 5. The resin particles increase the shear flow velocity of the thermal oil after the heat dissipation layer 5 is compressed, which facilitates the rapid outward discharge of the heat generated outside the conductor during the operation of the cable, realizing the axial conduction and diffusion of heat inside the cable.

[0037] The outer side of the water-blocking layer 6 is provided with several evenly distributed integrated side grooves 26. The interior of the water-blocking layer 6 is provided with a water-absorbing filling cavity 27. A water-soluble filling bag 28 is embedded and connected at the middle position between two integrated side grooves 26 on the inner side of the water-blocking layer 6. The water-soluble filling bag 28 is filled with hydrogen peroxide solution. After the water-soluble filling bag 28 absorbs water, the hydrogen peroxide solution inside reacts with the water to produce oxygen. A water-blocking grease 29 is embedded and tightly connected to the inner side of the integrated side groove 26. The water-blocking grease 29 is tightly connected to the inner wall of the integrated side groove 26. The inner side of the water-absorbing filling cavity 27 is filled with water absorbent and nitrogen. After the water absorbent absorbs water and expands, its expanded part is squeezed out along the connecting groove 30. The edge of the water-blocking layer 6 is provided with a connecting groove 30 that communicates with the water-absorbing filling cavity 27. An aerogel 31 is embedded and tightly connected to the inner side of the shielding layer 9.

[0038] The pressure-bearing layer 8 has multiple elastic pressure-bearing cavities 32 with equal angles inside. Elliptical transition holes 33 are provided on both sides of the elastic pressure-bearing cavities 32 inside the pressure-bearing layer 8. A spreading groove 34 is provided between the elliptical transition holes 33 and the elastic pressure-bearing cavities 32. The inner side of the elastic pressure-bearing cavity 32 is filled with non-Newtonian fluid. Under the pressure of external force, the non-Newtonian fluid flows along the spreading groove 34 into the elliptical transition holes 33, and flows into the overflow narrow groove 37 through the elliptical transition holes 33. The capacity of the elastic pressure-bearing cavity 32 is greater than the capacity of the elliptical transition holes 33, which facilitates the filling of non-Newtonian fluid and concentrates and accurately transmits the pressure to the non-Newtonian fluid in the elastic pressure-bearing cavity 32. The outermost layer of the pressure-resistant layer 8 is provided with a pressure-bearing outer layer 35, and the inner side of the pressure-bearing outer layer 35 is provided with a distribution strip 36 corresponding to the position of the elastic pressure-bearing cavity 32. The side of the elliptical transition hole 33 is provided with an overflow narrow groove 37 that communicates with the inner side of the pressure-bearing outer layer 35. The inner side of the pressure-resistant layer 8 is provided with a receiving groove corresponding to the distribution strip 36. The distribution strip 36 is tightly embedded in the receiving groove. A gap is provided between the pressure-bearing outer layer 35 and the inner side of the pressure-resistant layer 8, and this gap communicates with the elastic pressure-bearing cavity 32 through the overflow narrow groove 37. When the pressure-resistant layer 8 is squeezed by external force, the distribution strip 36 initially disperses the pressure.

[0039] The working principle and usage process of this invention: In practical applications, the inner support 4 and thermal grease 18 provide stable support for the copper conductor 1, ensuring the support strength of the inner layer of the cable. With the help of fiber interlacing tape 13 and spiral fiber bundle 14, fiber materials are used to replace traditional rigid metal materials, thereby achieving tensile strengthening of the outer layer of the cable conductor. This reduces the overall weight of the cable while providing higher tensile strength. By combining the inner sheath 15, fiber-reinforced resin 16, and metal armor layer 17 located at the center of the cable, the tensile strength of the innermost layer of the cable is enhanced at the center. In conjunction with the polyethylene fiber bundles 19 located within the thermally conductive silicone grease 18, the inner support 4 and inner support block 20 not only possess axial support strength but also significantly improve their axial tensile and elongation resistance. This achieves support and reinforcement in the middle layer of the cable conductor. By setting multiple sets of tensile-strengthening structures within the cable, a three-dimensional combination reinforcement of the tensile strength of the outer, middle, and inner layers is achieved, enabling synergistic load bearing. Furthermore, while possessing high internal support strength, when subjected to external force, the pressure is initially dispersed by the distribution strip 36 and then concentrated and precisely transmitted to the non-Newtonian fluid in the elastic pressure-bearing cavity 32. Utilizing the energy absorption characteristics of the non-Newtonian fluid under pressure, under the conduction of the spreading groove 34, the stressed non-Newtonian fluid quickly flows into the elliptical transition holes 33 on both sides of the elastic pressure-bearing cavity 32 to further buffer and disperse the external force, thereby improving the compressive strength of the cable. Furthermore, the overflow trough 37 is used to further transfer the non-Newtonian fluid that is transferred under force in the elliptical transition hole 33 to the outside. The non-Newtonian fluid is used to seal the space between the pressure-bearing outer layer 35 and the pressure-resistant inner layer 8, which plays a role in covering and protecting the cable. When the cable is under pressure, the non-Newtonian fluid is transferred to the outside to prevent the cable from being damaged by pressure. During cable operation, heat is generated at the center conductor. A heat transfer channel is constructed using thermal grease 18, inner support block 20, and guide groove 21 to quickly dissipate the heat generated outside the conductor during cable operation, achieving axial heat dissipation within the cable. Combined with thermal silicone sheet 22, heat-uniform cavity 23, spacer ring 24, and reinforcing ribs 25, the heat is absorbed by the thermal oil in the heat-uniform cavity 23 during the heat conduction process, quickly reducing the heat at the center of the cable and facilitating the rapid and even distribution of heat within the cable. The resin particles filled in the heat-uniform cavity 23 can cause the resin particles to peristalse during cable tension and compression, increasing the flow rate of the thermal oil and ensuring uniform heat distribution. By distributing the heat from the center of the cable outwards, heat dissipation is achieved while maintaining the overall flexibility of the cable through the heat it provides, thus preventing the cable from becoming brittle in the low-temperature environment of the deep sea. During the use of the cable, if the internal structure is damaged due to external pressure or hard objects, seawater can directly enter the cable. At this time, the water-blocking layer 6 inside the cable, combined with the water-blocking grease 29 filled in the integrated side groove 26, can provide a water-blocking barrier for the inside of the cable. In conjunction with the aerogel 31, the passive water-blocking ability of the cable is improved. After water accidentally enters, the water-absorbing agent filled in the water-absorbing filling cavity 27 absorbs water and expands, and the expanded part is squeezed out along the connecting fine groove 30. The expanded water-absorbing agent seals the gap between the water-blocking layer 6 and the supporting inner layer 11, making them form a whole. Combined with the scattered pores 12 in the supporting inner layer 11, the expanded water-absorbing agent extends into the interior of the supporting inner layer 11, ensuring its tightness and realizing active maintenance when water seepage occurs. Meanwhile, after the water-soluble filling bag 28 inside the water-blocking layer 6 comes into contact with seawater, the hydrogen peroxide solution inside reacts with the water to produce oxygen. Combined with the nitrogen filling the water-absorbing filling cavity 27, the expanding water-absorbing agent is quickly pushed out under the action of air pressure, thereby achieving a rapid active response. In the early stage of the water seepage response, oxygen and nitrogen will be discharged outward along the path of seawater seepage to form dense bubbles, which facilitates the reaction of cable water seepage and thus facilitates maintenance.

[0040] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high tensile strength and lightweight deep-sea towing cable, comprising a copper conductor (1) and an optical fiber cable (2), characterized in that: The copper conductors (1) are arranged in four groups, and each copper conductor (1) is centrally symmetrically distributed. The optical fiber cable (2) is placed in the center of the copper conductors (1). The outer side of the copper conductors (1) is covered with an insulating layer (3). Each copper conductor (1) is separated and supported by an inner support member (4). The outer side of the inner support member (4) is covered with a heat dissipation layer (5) that conducts heat evenly. The outer side of the heat dissipation layer (5) is provided with a water-blocking layer (6) that blocks water. The water-blocking layer (6) is nested inside the tensile inner layer (7). The outer side of the tensile inner layer (7) is provided with a pressure-bearing buffer protection layer (8). The outer side of the pressure-blocking layer (8) is covered with a physical protection shielding layer (9). The outer side of the shielding layer (9) is provided with an outer protective layer (10). The water-blocking layer (6) and the tensile inner layer (7) are separated by a supporting inner layer (11), and the supporting inner layer (11) has uniformly distributed pores (12) inside. The tensile inner layer (7) is composed of a fiber interwoven band (13) and a spiral fiber bundle (14). The outer side of the optical fiber cable (2) is covered with an inner cladding layer (15), and the outer side of the inner cladding layer (15) is spirally distributed with fiber-reinforced resin (16). The outer side of the fiber-reinforced resin (16) is covered by a metal armor layer (17). The gap between the outer side of the insulation layer (3) and the inner support member (4) is filled with thermally conductive silicone grease (18). Multiple sets of polyethylene fiber bundles (19) are inserted longitudinally inside the thermally conductive silicone grease (18). An inner support block (20) is provided on the side of the inner support member (4).

2. The high tensile strength and lightweight deep-sea towing cable according to claim 1, characterized in that: The fiber interwoven belt (13) is made of two sets of aramid fiber belts with opposite directions of rotation interwoven in a spiral shape. There are two sets of spiral fiber bundles (14), and the two sets of spiral fiber bundles (14) tightly wrap around the outside of the fiber interwoven belt (13) in a spiral winding manner.

3. The high tensile strength and lightweight deep-sea towing cable according to claim 1, characterized in that: The cross section of the inner support member (4) is cross-shaped, and the inner support block (20) is located on the cross shape. The cross section of the thermal grease (18) is fan-shaped, and the thermal grease (18) is in close contact with the four inner support blocks (20) of the inner support member (4).

4. The high tensile strength and lightweight deep-sea towing cable according to claim 1, characterized in that: The inner support block (20) has several guide grooves (21) that are equidistantly opened inside. The contact position between the inner sidewall of the heat dissipation layer (5) and the inner support member (4) is uniformly provided with several sets of thermally conductive silicone sheets (22) along the circumferential direction. The heat dissipation layer (5) has several longitudinally arranged uniform heat cavities (23) arranged inside its axial direction. The uniform heat cavity (23) is filled with thermally conductive oil, and resin particles are uniformly distributed in the thermally conductive oil. Adjacent uniform heat cavities (23) are separated by a partition ring (24). The inner side of the uniform heat cavity (23) is provided with several sets of reinforcing ribs (25) along its longitudinal direction.

5. A high tensile strength, lightweight deep-sea towing cable according to claim 4, characterized in that: The guide groove (21) transfers the heat absorbed by the thermal grease (18) outward along the cable axis. The thermal conductive silicone sheet (22) and the thermal oil in the uniform heat cavity (23) transfer the heat horizontally along the cable. The thermal conductive silicone sheet (22) separates the inner support (4) and the heat dissipation layer (5).

6. The high tensile strength and lightweight deep-sea towing cable according to claim 1, characterized in that: The outer side of the water-blocking layer (6) is provided with several evenly distributed integrated side grooves (26), the interior of the water-blocking layer (6) is provided with a water-absorbing filling cavity (27), and a water-soluble filling bag (28) is embedded and connected at the middle position between two integrated side grooves (26) on the inner side of the water-blocking layer (6). A water-blocking grease (29) is embedded and tightly connected on the inner side of the integrated side groove (26). A connecting groove (30) communicating with the water-absorbing filling cavity (27) is opened on the edge of the water-blocking layer (6), and an aerogel (31) is embedded and tightly connected on the inner side of the shielding layer (9).

7. A high tensile strength, lightweight deep-sea towing cable according to claim 6, characterized in that: The water-blocking grease (29) is tightly fitted to the inner wall of the integrated side groove (26), the inner side of the water-absorbing filling cavity (27) is filled with water absorbent and nitrogen, and the interior of the water-soluble filling bag (28) is provided with hydrogen peroxide solution.

8. The high tensile strength and lightweight deep-sea towing cable according to claim 1, characterized in that: The pressure-bearing layer (8) has multiple elastic pressure-bearing cavities (32) distributed at equal angles inside. Elliptical transition holes (33) are provided on both sides of the elastic pressure-bearing cavities (32) inside the pressure-bearing layer (8). Spreading grooves (34) are provided between the elliptical transition holes (33) and the elastic pressure-bearing cavities (32). The outermost layer of the pressure-resistant layer (8) is provided with a pressure-bearing outer layer (35), and the inner side of the pressure-bearing outer layer (35) is provided with a distribution strip (36) corresponding to the position of the elastic pressure-bearing cavity (32). The side of the elliptical transition hole (33) is provided with an overflow narrow groove (37) that communicates with the inner side of the pressure-bearing outer layer (35).

9. A high tensile strength, lightweight deep-sea towing cable according to claim 8, characterized in that: The inner side of the elastic pressure-bearing cavity (32) is filled with a non-Newtonian fluid, and the capacity of the elastic pressure-bearing cavity (32) is greater than the capacity of the elliptical transition hole (33).

10. A high tensile strength, lightweight deep-sea towing cable according to claim 8, characterized in that: The inner side of the pressure-resistant layer (8) is provided with a receiving groove corresponding to the distribution strip (36). The distribution strip (36) is tightly embedded in the receiving groove. A gap is provided between the pressure-bearing outer layer (35) and the inner side of the pressure-resistant layer (8), and the gap is connected to the elastic pressure-bearing cavity (32) through the overflow narrow groove (37).

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